1G Blown trans?

[91lzer]

Last night I was pulling away from a stop when my car violently kicked out of gear. It happens every now and then so I didn’t think much of it. But when I put it into gear I had 6 neutrals and no reverse. My clutch feels normal and I can’t put it into gear without the clutch. When it is in gear though, it makes a rough whirring noise. With those symptoms, what could it possibly be? I am 80% sure that this is the original 200,000 KM transmission

 

[XC92]

Were there any signs of unusual drivetrain activity in the days, hours and minutes leading up to this, e.g. weird noises, harder to get into and out of gear, unusual vibrations, etc.? Have you checked the oil to see if there's any and what color it is and if there are any metal shavings? Any unusual smells?

Obviously the trans is likely shot and you'll have to either repair or replace it, but with more info maybe someone here can be better able to pinpoint what might be wrong with it. But it'll have to be taken apart to find out for sure.

My very non-expert guess is something with the output shaft or diff.

 

[91lzer]

Were there any signs of unusual drivetrain activity in the days, hours and minutes leading up to this, e.g. weird noises, harder to get into and out of gear, unusual vibrations, etc.? Have you checked the oil to see if there's any and what color it is and if there are any metal shavings? Any unusual smells?

Obviously the trans is likely shot and you'll have to either repair or replace it, but with more info maybe someone here can be better able to pinpoint what might be wrong with it. But it'll have to be taken apart to find out for sure.

My very non-expert guess is something with the output shaft or diff.

Thanks for the reply man. I just figured it out and my cv shaft grenaded

 

[XC92]

Thanks for the reply man. I just figured it out and my cv shaft grenaded

What do you mean? Where it connects to the diff inside the trans, the inner joint, the outer joint or where it connects to the hub? Or the actual shaft? And both or just one?

 

[91lzer]

What do you mean? Where it connects to the diff inside the trans, the inner joint, the outer joint or where it connects to the hub? Or the actual shaft? And both or just one?

Where it connects to the hub

 

[XC92]

Where it connects to the hub

The only thing that could make this happen that I can think of is seized bearing. Did you hear the telltale sounds of failing bearings while driving at relatively faster speeds prior to this happening, kind of a low-pitched whining that reminded me of turbines or turbofan engines? Do the wheels still turn when the front is raised?

In any case hopefully only the axle and bearings are shot, perhaps the hub, and the shock wasn't transferred to the trans. These are all relatively low cost and simple fixes. I could do both sides in an afternoon at this point and have all the tools.

 

[1990TSIAWDTALON]

Gonna prolly have to pull the trans to get to the issue it sounds like, unfortunately.

 

[XC92]

If it broke on the hub side then it could be because it seized on the trans side and when the wheel kept turning it stripped or broke the hub side, basically? If so, and since he says he can shift gears but no motion, could it be just the diff or VC, or would such a violent seizure basically explode everything inside?

I suppose that one quick test before dropping and opening up the trans would be to raise the front, and try to turn one wheel to see if the other wheel turns and if so which way. If that fails, at the very least the diff is gone, and if it works, put the car in gear and turn over the engine to see if the shafts move. If they do, it was a hub issue. If not, the trans is trashed.

Note I'm just spitballing here, since no actual trans experts weighed in.

 

[motomattx]

It sounds like just a cv joint separated.

 

[XC92]

It sounds like just a cv joint separated.

He said it was at the hub, not joint. Perhaps that's what he meant though since the outer BJ joint abuts the hub.

Btw if one shaft no longer turns the wheel and is spinning freely without a load, what happens to the other shaft when the VC "senses" it? Does it essentially stop turning the other shaft? I know this is pretty basic driveline stuff but I'm a bit vague on that. And yeah, My Cousin Vinnie territory here, and I'm no yoot.

 

[motomattx]

He said it was at the hub, not joint. Perhaps that's what he meant though since the outer BJ joint abuts the hub.

Btw if one shaft no longer turns the wheel and is spinning freely without a load, what happens to the other shaft when the VC "senses" it? Does it essentially stop turning the other shaft? I know this is pretty basic driveline stuff but I'm a bit vague on that. And yeah, My Cousin Vinnie territory here, and I'm no yoot.

The car quits moving.

 

[steve]

Once long ago I managed to pull one of the rear axles out of the diff in an aggressive lane change. It felt like I smoked the clutch. If you were gentle the car would move but if you applied any more power the revs would go up but the car didn't move equally just like if the clutch was slipping.

The experience left me wondering exactly how much power the VC's would actually handle/transfer and how long it took them to reach hump?

 

[91lzer]

It sounds like just a cv joint separated.

It cleanly sheared the shaft near the hub. I ended up replacing both axles it as well as the control arms, tie rod ends, and sway bar links. The car is now mint but there is a slight clunk under hard acceleration. Trying to diagnose that

Once long ago I managed to pull one of the rear axles out of the diff in an aggressive lane change. It felt like I smoked the clutch. If you were gentle the car would move but if you applied any more power the revs would go up but the car didn't move equally just like if the clutch was slipping.

The experience left me wondering exactly how much power the VC's would actually handle/transfer and how long it took them to reach hump?

He said it was at the hub, not joint. Perhaps that's what he meant though since the outer BJ joint abuts the hub.

Btw if one shaft no longer turns the wheel and is spinning freely without a load, what happens to the other shaft when the VC "senses" it? Does it essentially stop turning the other shaft? I know this is pretty basic driveline stuff but I'm a bit vague on that. And yeah, My Cousin Vinnie territory here, and I'm no yoot.

Yeah the other intact shaft didn’t spin due to an open differential.